Reply to some comments of Mr. F. Marcet on the power of selection ascribed to the roots of plants

A description of active and extinct volcanos

A description of active and extinct volcanos. With remarks on their origin, their chemical phaenomena, and the character of their products, as determined by the condition of the earth during the period of their formation. Being the substance of some lectures delivered before the University of Oxford, with much additional matter

Address to the members of the university

An inaugural lecture on the study of botany

Brief remarks on the correlation of the natural sciences

Brief remarks on the statute De lectoribus publicis to be submitted to convocation on Tuesday, June 17